Adhesive means for connecting a web end on a material roll and corresponding method

ABSTRACT

An adhesive strip is usable to prepare a material roll for a flying roll change. A support strip has at least one adhesive layer or stripe on its upper surface. A further adhesive zone is provided on the undersurface of the support strip. The adhesive zone includes at least two adhesive layers which are separated from each other by a backing paper. An additional separate adhesive strip is also placed on the undersurface of the support strip, spaced from the adhesive zone and without a backing paper.

FIELD OF THE INVENTION

The present invention is directed to an adhesive tape adapted for use inconnecting a web starting end of a roll of material and to a method ofits use. The adhesive tape is intended for use for preparing a roll ofmaterial for a flying roll change.

BACKGROUND OF THE INVENTION

EP 1 022 245 A2 discloses an adhesive for use in a flying roll change.An adhesive location exhibits a separable capability.

DE 198 30 674 A1 discloses an adhesive for use in a flying roll change.Two edge regions of an adhesive location each exhibit a separablecapability.

WO 98152857 discloses a method for adhesive location during preparationof a material web. This publication also discloses various devices forperforming the disclosed method. In this prior method, the web startingend of the new paper web is gripped and is conducted in paper guidedevices. An adhesive assembly which may be, for example, adhesivelabels, can be placed extending beyond the cut edge of the web startingend on the outer side, of the web starting end. The paper web is thenwound back onto the paper roll, so that the adhesive, which wasprotruding beyond the cut edge, can come to rest on the periphery of thepaper roll and in this way can fix the web starting end on theperiphery. The result of this prior method of adhesive locationpreparation of a paper roll is, therefore, that the adhesive covers thecut edge of the web starting end.

DE 43 39 309 A1, DE 296 21 879 U1 and DE 198 30 673 A1 all describeadhesive assemblies Intended for use in preparing a roll of material fora flying roll change. A support band is connected with the upper side ofthe web starting end by the provision of an adhesive zone. Anotheradhesive zone of the support band is connected with the second materialply of the roll. The outer side of the support band is also connectedwith the old web.

In the case of the adhesive strips disclosed in DE 40 33 900 A1, aseparating of the adhesive strips occurs between an adhesive zone of asupport band and an adhesive strip. A splitting between the adhesivelocation arranged on the second ply between two adhesive strips is notaccomplished in this document.

SUMMARY OF THE INVENTION

An object of the present invention is to provide an adhesive tape foruse in connecting a web starting end of a roll of material, and to amethod of its use.

The object of the present invention is achieved by the provision of anadhesive tape which includes a support band. At least one adhesive stripis arranged on an upper surface of this support band. An adhesive zoneis provided on one portion of the undersurface of the support band andincludes at least two adhesive strips which are separated from eachother by a release film. Another area of the undersurface of the supportband has a separate adhesive strip which does not have a release film.The lower adhesive strip in the adhesive zone is connected to theunderlying web layer on the new roll while the spaced, separate adhesivestrip, without the release sheet or film, is connected to the upper sideof the roll's uppermost web.

An advantage of the adhesive tape in with the present invention liesparticularly in that the adhesive for fixing the web starting end on theperiphery of the new roll of material covers the cut edge from above, sothat it is easy to apply.

The separating of the two adhesive strips, in their connection zone,forms a defined separable location without having to cut or to tearparts. During the withdrawing of the web starting end from the peripheryof the new roll of material during the adhering of the new web startingend to the old material web during a flying roll change, the adhesiveused for fixing the web starting end to the underlying web layer on thenew roll do not have to be separated through, for example, a perforationin the adhesive zone which would otherwise have to be provided. Instead,the web starting end can simply be withdrawn from the periphery of thenew roll of material. The withdrawal force only has to be at leastsufficient to overcome the holding strength of the adhesive tape betweenthe periphery of the new roll of material and the web starting end. Thismethod of web end withdrawal is especially advantageous, when anadhesive in the form of, for example an adhesive tape, is used, whichadhesive can be split along the plane of its body. In withdrawing theweb starting end, the adhesive tape in accordance with the presentinvention then splits in the dividing plane, so that one part is drawnin with the web starting end and the other part remains on the webperiphery. No separate labels are needed, so that a continuous adhesionis possible.

BRIEF DESCRIPTION OF THE DRAWINGS

A preferred embodiment of the adhesive tape in accordance with thepresent invention is illustrated in the drawings and is described belowin greater detail.

The drawings show as follows: in

FIG. 1 a cross sectional view of an adhesive tape in accordance with thepresent invention for use in the adhesive location preparation of a rollof material; and in

FIG. 2 a schematic side view of a processing phase during the adhesivelocation preparation.

DESCRIPTION OF THE PREFERRED EMBODIMENT

To perform the method for connecting a web starting end to a roll inaccordance with the present invention, an adhesive assembly 01, in theform of an adhesive tape 01 can be used. Such an adhesive tape 01 isshown schematically in cross section in FIG. 1.

The adhesive tape, generally at 01 includes a support band or strip 05,which,gives mechanical strength to the adhesive tape 01 and in which,pulling forces can be transmitted.

On an upper side of support band 05 there is provided an upper adhesivestrip 03. This upper adhesive strip 03 is preferably formed by theapplication of a corresponding adhesive material on the support band 05.The upper adhesive strip 03 is protected by a suitable cover strip 06,which is removable.

On an underside of support band 05 there is located a lower adhesivestrip 02, which is generally similar to the upper adhesive strip 03 butwhich contacts the underside of support band 05 only over a portion ofsurface band 05's underside. There is also provided an additional,separate adhesive zone 08. This adhesive zone 08 has at least twostacked adhesive strips 9, 10, which are separated from one another by asplitting paper or a backing paper or release film 04. The loweradhesive strip 02 is one-ply and is formed without the interposition ofa splitting paper or backing layer or release film 04 between it and thesupport band 05.

The two separate lower adhesive locations 02, 08, which are located onthe underside of the support band 05 can be separated from one anotherby a spacing gap 07.

It is also within the scope of the present invention to place aplurality of the one-ply adhesive strips 02 on the underside of thesupport band 05, with these plurality of adhesive strips 02 beingseparated from one another by a plurality of the spacing gaps 07.

The use of the adhesive tape 01 in accordance with the present inventionfor carrying out the method of the present invention is shownschematically in FIG. 2.

As can be seen by now referring to FIG. 2, the adhesive tape 01 isapplied on a web starting end 11, and on a web starting periphery 12,which is a second material web ply 12 that underlies the material webtop layer 15 which includes the web starting end 11, manually or by useof suitable mechanical gripping elements. The web starting end 11 is thefree end of the top layer 15 of the material web which forms a newmaterial roll 13, which is typically a paper roll 13 that will be usedin a flying roll change.

The web starting end 11 of the uppermost or top layer 15 of the materialweb is laid out flush on a working table, which is not specificallyshown, and the web starting end 11 is cut to form an exact, cut edgewhich is either parallel with or is inclined to the rotational axis ofthe material roll 13. In this connection, the adhesive tape 01 is fixedon the web starting end 11 by congruent placement of the first, loweradhesive strip 02 along the cut edge on the web starting end 11. Thesecond or upper adhesive strip 03 is still covered with covering strip06 in this phase of the process.

After securement of the adhesive tape on the web starting end 11 of thematerial web 15, e.g. of a paper web 15, the material roll 13 is rewoundin the direction of the motion arrow 16, as seen in FIG. 2.

As the material roll 13 is rewound, the web starting end 11 and theadhesive tape 01 are pressed against the periphery 12 of the materialroll 13 by a pressure element, which is not specifically shown, butwhich is typically formed in the manner of a paper lead, or guide,roller. The adhesive tape 01 extends, with its adhesive zone 08, intothe area of the periphery 12 of the new material roll 13, so that, uponthe contact of the adhesive zone 08 with the periphery 12, the web startend becomes fixed on the periphery 12. Then, the cover strip 06 isremoved from the upper adhesive strip 03. With that cover strip 06removal, the adhesive location on the new material roll 13 is nowcompletely prepared.

Following mounting of the new material roll 13 in a roll changer, whichis not specifically shown, pressing of the upper adhesive strip 03against another material web connects the start end 11 of the newmaterial roll 13 with the material web to be replaced.

Upon the subsequent pulling of the web start end 11 from the peripheryof the new material roll 13, as the upper adhesive strip 03 is broughtinto contact with the expiring material web, the adhesive zone 08 splitsalong the splitting paper or release film 04 situated between the twoadhesive strips 09 and 10, so that, after fixing of the adhesive zone 08on the material web 12, the adhesive tape 01 gets divided by splittingbetween the adhesive layers 09 and 10.

While a preferred embodiment of an adhesive tape and its method of use,in accordance with the present invention, has been set forth fully andcompletely hereinabove, it will be apparent to one of skill in the artthat various changes in, for example, the specific adhesives used, thetype of release film or backing paper used and the like could be madewithout departing from the true spirit and scope of the presentinvention which is accordingly to be limited only by the followingclaims.

What is claimed is:
 1. An adhesive tape adapted for use for preparing aroll of material for a flying roll change, said adhesive tapecomprising: a support band having an upper surface and a lower surface;at least one upper adhesive strip on said support band upper surface; anadhesive zone on said lower surface of said support band, said adhesivezone including at least first and second adhesive layers separated apartfrom each other by a release film; and a lower adhesive strip on saidlower surface of said support band, said lower adhesive strip beingspaced from said adhesive zone by a spacing gap.
 2. The adhesive tape ofclaim 1 wherein said lower adhesive strip is one ply.
 3. The adhesivetape of claim 1 further including a plurality of said lower adhesivestrips each separated by said gap from said adhesive zone.
 4. A methodof connecting a web start end of a first layer of a material web woundas a material roll to a second layer of said material web including:providing a support band having an upper surface and a lower surface;arranging at least one upper adhesive strip on said support band uppersurface; providing an adhesive zone on said lower surface of saidsupport band; forming said adhesive zone having at least first andsecond adhesive layers; separating said at least first and secondadhesive zones from each other by a release film; providing a loweradhesive strip on said lower surface of said support band; spacing saidlower adhesive strip from said adhesive zone by a spacing gap;connecting said adhesive zone to said second layer of said material web;and connecting said lower adhesive strip to said web start end of saidfirst layer of said material web strand.
 5. The method of claim 4further including providing a second material web and connecting saidweb start end of said material web to said second material web bycontacting said second material web with said at least one upperadhesive strip.
 6. The method of claim 4 further including cutting saidweb start end of said first layer of said material web strand prior toconnecting said lower adhesive strip to said web start end of said firstlayer of said material web strand.
 7. The method of claim 6 furtherincluding forming an exact cut edge during said cutting of said webstart end and orienting said exact cut edge selectively parallel withand inclined with respect to an axis of rotation of said material roll.8. The method of claim 4 further including connecting said loweradhesive strip to said web start before connecting said adhesive zone tosaid second layer of said material web.
 9. The method of claim 4 furtherincluding providing a pressing element and using said pressing elementfor pressing said web start against said second layer of said materialweb.
 10. The method of claim 4 further including placing said web startend flat before connecting said lower adhesive strip to said web startend.
 11. The method of claim 10 further including providing a table andplacing said web start end on said table.
 12. The method of claim 4further including connecting said web start end to said second layer ofsaid material web.